11770506531 has 18 divisors (see below), whose sum is σ = 19777654572. Its totient is φ = 6726003480.

The previous prime is 11770506509. The next prime is 11770506533. The reversal of 11770506531 is 13560507711.

11770506531 is a `hidden beast` number, since 1 + 1 + 7 + 70 + 50 + 6 + 531 = 666.

It is not a de Polignac number, because 11770506531 - 2⁵ = 11770506499 is a prime.

It is a super-2 number, since 2×11770506531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11770506533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13344805 + ... + 13345686.

Almost surely, 2^11770506531 is an apocalyptic number.

11770506531 is a deficient number, since it is larger than the sum of its proper divisors (8007148041).

11770506531 is a wasteful number, since it uses less digits than its factorization.

11770506531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26690511 (or 26690501 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The spelling of 11770506531 in words is "eleven billion, seven hundred seventy million, five hundred six thousand, five hundred thirty-one".